Alasdair is a distinctive boys' name in England & Wales, ranking #764 in 2006 with 33 recorded births. The name reached its all-time peak in 1996 with 71 births ranking #335. Since 1996, the popularity has decreased by 53.5%. In 2006, approximately 1 in every 9,707 boys born was named Alasdair. STABLE Recent data shows the name is currently stable.